Industrials

Core & Main, Inc. (CNM) options and signal

Figures as of 28 Sep 2026

CNM is Core & Main, Inc., an Industrials name the model ranks every trading day. The options figures are from the close on 28 Sep 2026. The model's figures are from 25 Sep 2026, one trading day behind the latest, as the Free plan shows them. Every model figure is paper trading.

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At a glance

Figure	Value	Date
IV rank	38 of 100	28 Sep
At the money IV	40.7%	28 Sep
Priced move to 16 Oct	8.9% down, 9.8% up	28 Sep
Call wall and put wall	42.5 and 40	28 Sep
Signal and the desk's view	No signal, view neutral	25 Sep
Last close	42.39	28 Sep
Next report	8 Dec 2026	28 Sep

Options Snapshot

CNM's IV rank is 38 of 100 on 28 Sep 2026.

Figure	Value
IV rank	38 of 100
At the money IV	40.7%, near month, 18 days
Put/call ratio, open interest	0.34
Call open interest, strikes captured near the price	2,300 contracts
Put open interest, strikes captured near the price	773 contracts
Cost to trade at the money	Wide, 49.5% of the option's mid price

IV rank is where the at the money IV sits among CNM's own weekly readings, 0 the lowest and 100 the highest.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Priced Range

On 28 Sep 2026, CNM options priced a move of 8.9 percent down and 9.8 percent up by 16 Oct 2026.

Expiry	Days	Down	Up	Range
16 Oct 2026	18	8.9%	9.8%	38.62 to 46.55
20 Nov 2026	53	13.9%	15.4%	36.51 to 48.92
18 Dec 2026	81	22.6%	20.3%	32.82 to 50.99
15 Jan 2027	109	22.9%	23.0%	32.67 to 52.15
19 Mar 2027	172	26.2%	28.1%	31.29 to 54.29

The range is one standard deviation either side of the close of 42.39, as the option prices imply it.

A priced move restates option prices at the close and says nothing certain about where the price goes.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Gamma Map

On 28 Sep 2026, CNM's call wall is the 42.5 strike and its put wall is the 40 strike.

Figure	Value
Call wall, most open call gamma	42.5
Put wall, most open put gamma	40
Net dollar gamma, calls minus puts	$138,760
Total dollar gamma, both sides	$255,921
Close	42.39

Dollar gamma is stated for a one percent move in the price.

Net is calls minus puts under the standard convention, not a record of who holds the contracts.

Net gamma changes sign at 2 strikes, so no single flip strike is named.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility History

On 28 Sep 2026, CNM's at the money IV is 40.7 percent against 20 day realized volatility of 34.8 percent.

Figure	Value
At the money IV	40.7%
Realized volatility, 20 trading days	34.8%
Realized volatility, 60 trading days	29.1%
IV against its own weekly record	In the middle
Weekly readings on record	229, from 17 Sep 2021
Weeks the price moved more than the one week priced move	21.2% of 226 weeks

Realized volatility is worked out from the daily closes the desk holds, not from the option chain.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Weather

On 28 Sep 2026, CNM's at the money IV runs from 40.7 percent at 18 days to 38.3 percent at 172 days.

Days to expiry	At the money IV
18	40.7%
53	35.3%
81	42.1%
109	40.0%
172	38.3%

Near expiries price more volatility than far ones, an inverted term structure.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Surface

On 28 Sep 2026, CNM's surface spans 5 expiries out to 172 days, with IV from 35.2 to 51.9 percent near the price.

Figure	Value
Expiries captured	5
Nearest expiry	16 Oct 2026, 18 days
Farthest expiry	19 Mar 2027, 172 days
Points within 10% of the price, 7 days out or more	15
Lowest IV among them	35.2%
Highest IV among them	51.9%

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Expiry Ladder

On 28 Sep 2026, CNM has 5 captured expiries, from 16 Oct 2026 to 19 Mar 2027.

Expiry	Days	At the money IV	Call open interest	Put open interest
16 Oct 2026	18	40.7%	728	164
20 Nov 2026	53	35.3%	17	10
18 Dec 2026	81	42.1%	155	195
15 Jan 2027	109	40.0%	1,211	336
19 Mar 2027	172	38.3%	187	68

Open interest is summed over the strikes captured near the price on each expiry.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Strike Table

On 28 Sep 2026, CNM's largest open interest sits at the 42.5 strike, with 600 contracts across the captured expiries.

Strike	Call open interest	Put open interest	Total
42.5	529	71	600
47.5	414	45	459
45	289	150	439
50	298	7	305
40	66	222	288
55	257	3	260

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Since Yesterday

From 25 Sep 2026 to 28 Sep 2026, CNM's at the money IV moved from 34.8 percent to 40.7 percent.

Figure	25 Sep	28 Sep	Change
At the money IV	34.8%	40.7%	+5.9 points
Open interest, strikes captured near the price	3,045	3,071	+26
Put/call ratio, open interest	0.34	0.34	-0.00

Open interest changes cannot identify buyers or sellers.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Changed Hands

On 28 Sep 2026, 2,049 CNM option contracts traded, 0.9 times its own recent average.

Figure	Value
Calls traded	1,884
Puts traded	165
Against its recent average	0.9 times
Busier than	2 of its last 9 trading days
Open interest, whole chain	3,167 contracts
Volume to open interest	0.65
Unusual volume flag	No

Traded volume and open interest are shown side by side and never combined. Open interest changes cannot identify buyers or sellers.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Positioning Replay

The replay holds 10 trading days of CNM's option positioning, from 15 Sep 2026 to 28 Sep 2026.

Date	Close	Net dollar gamma	Top call strike	Top put strike
15 Sep 2026	41.08	minus $1.11 million	47.5	40
21 Sep 2026	43.06	$98,662	42.5	40
28 Sep 2026	42.39	$138,760	42.5	40

Each frame restates one nightly capture. Net is calls minus puts, a convention, not who holds the contracts.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Read-out

On 25 Sep 2026 the desk's view of CNM was neutral, paper trading.

Figure	Value
Side	Neutral at 45 trading days, no signal
Level above the close	43.48, the swing high of 17 Sep 2026
Level below the close	41.23, the swing low of 24 Sep 2026
Strategy family	Long straddle (buy a call and a put at the same strike)
Price target	None. The desk has no price model.

The levels are prices the shares turned at on the chart, with the date of each.

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Rank by Timeframe

On 25 Sep 2026 CNM sat at the 35th percentile of the model's 45 trading day ranking, paper trading.

Timeframe	Percentile	Side
10 trading days	28 of 100	Neutral
20 trading days	34 of 100	Neutral
45 trading days	35 of 100	Neutral

100 is the top of the ranking. A name in the middle three fifths is neutral.

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Timeframe Agreement

On 25 Sep 2026 CNM's near timeframes were neutral and its long timeframe was neutral, paper trading.

Group	Timeframes	Side	On that side
Near	10 day, 20 day	Neutral	0 of 2
Long	45 day	Neutral	0 of 1

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

Open Timeframe Agreement in RingMaster The Timeframe Agreement guide

Signal History

On 25 Sep 2026 CNM had carried no signal for at least 10 trading days, paper trading.

Trading day	Signal	45 day percentile
25 Sep 2026	None	35 of 100
24 Sep 2026	None	22 of 100
23 Sep 2026	None	29 of 100
22 Sep 2026	None	29 of 100
21 Sep 2026	None	36 of 100
18 Sep 2026	None	38 of 100
17 Sep 2026	None	34 of 100
16 Sep 2026	None	34 of 100

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

Open Signal History in RingMaster The Signal History guide

Sector Split

On 25 Sep 2026, 51 of 147 Industrials names were bullish and 37 were bearish, paper trading.

Sector	Names	Bullish	Bearish	Neutral
Industrials	147	51	37	59

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Price Chart

CNM closed at 42.39 on 28 Sep 2026.

Figure	Value
Last close	42.39
Change over 5 trading days	-1.6%
Change over 21 trading days	-3.1%
Change over 63 trading days	-11.7%
Change over 252 trading days	-17.0%
52 week high	59.66
52 week low	40.10
20 day moving average	42.50
50 day moving average	43.82
200 day moving average	49.49
RSI, 14 days	46

Worked out from the desk's own daily bars, adjusted for share splits.

From the daily bars through 28 Sep 2026. Current on every plan.

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Earnings Radar

CNM reports next on 8 Dec 2026, a date worked out from past quarters.

Figure	Value
Next report	8 Dec 2026
Date	Worked out from past quarters

Earnings calendar as of 28 Sep 2026. Current on every plan.

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Seasonality

In the 5 Septembers on record, CNM's average change was minus 8.9 percent, and it rose in 0.0 percent of them.

Month	Average change	Middle change	Share of years up	Years
September	-8.9%	-7.6%	0.0%	5
October	+1.8%	+3.7%	60.0%	5
November	+0.9%	-2.7%	40.0%	5

Each figure is a month end to month end change in past years. A past month says nothing certain about the next one.

Monthly history through 28 Sep 2026. Current on every plan.

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Headlines

The desk's news feeds carried 1 headline naming CNM in the 3 days to 28 Sep 2026.

Figure	Value
Headlines in the window	1
Latest	26 Sep 2026

The titles are in the Headlines window, with the time each was published.

Headlines as of 28 Sep 2026. Current on every plan.

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Questions

What is CNM's IV rank?: CNM's IV rank is 38 of 100 on 28 Sep 2026.
What move are CNM options pricing?: On 28 Sep 2026, CNM options priced a move of 8.9 percent down and 9.8 percent up by 16 Oct 2026.
Where are CNM's call wall and put wall?: On 28 Sep 2026, CNM's call wall is the 42.5 strike and its put wall is the 40 strike.
What was the desk's latest view of CNM on the Free plan?: On 25 Sep 2026 the desk's view of CNM was neutral, paper trading.
When does CNM report earnings next?: CNM reports next on 8 Dec 2026, a date worked out from past quarters.

More Industrials names

Guides and the full list

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